<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="仅允许设置三级分类"
        type="warning"
        :closable="false"
        show-icon
      ></el-alert>
      <el-row class="cat_opt">
        <el-col>
          <span>选择商品分类：</span>
          <el-cascader
            :options="cateList"
            :props="cascaderProps"
            clearable
            v-model="selectedCateKeys"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button
            :disabled="isBtnDisable"
            type="primary"
            size="mini"
            @click="addDialogVisible = true"
            >添加参数</el-button
          >
          <el-table :data="manyTabData" border stripe>
            <el-table-column type="expand">
              <template v-slot="scope">
                <span v-if="scope.row.attr_vals">
                  <el-tag
                    v-for="(item, index) in scope.row.attr_vals.split(',')"
                    :key="index"
                    closable
                    @close="handleClose(index, scope.row)"
                  >
                    {{ item }}
                  </el-tag>
                </span>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name">
            </el-table-column>
            <el-table-column label="操作">
              <template v-slot="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEdit(scope.row)"
                  >编辑</el-button
                >
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="deleteAttr(scope.row)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button
            :disabled="isBtnDisable"
            @click="addDialogVisible = true"
            type="primary"
            size="mini"
            >添加属性</el-button
          >
          <el-table :data="onlyTableData" border stripe>
            <el-table-column type="expand">
              <template v-slot="scope">
                <span v-if="scope.row.attr_vals">
                  <el-tag
                    v-for="(item, index) in scope.row.attr_vals.split(',')"
                    :key="index"
                    closable
                    @close="handleClose(index, scope.row)"
                  >
                    {{ item }}
                  </el-tag>
                </span>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button
                  v-else
                  class="button-new-tag"
                  size="small"
                  @click="showInput(scope.row)"
                  >+ New Tag</el-button
                >
              </template>
            </el-table-column>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name">
            </el-table-column>
            <el-table-column label="操作">
              <template v-slot="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEdit(scope.row)"
                  >编辑</el-button
                >
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="deleteAttr(scope.row)"
                  >删除</el-button
                >
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef">
        <el-form-item :label="titleText" label-width="80px" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef">
        <el-form-item :label="titleText" label-width="80px" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      inputVisible: false,
      inputValue: '',
      cateList: [],
      selectedCateKeys: [],
      cascaderProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover'
      },
      activeName: 'many',
      manyTabData: [],
      onlyTableData: [],
      addDialogVisible: false,
      editDialogVisible: false,
      addForm: { attr_name: '' },
      editForm: {},
      addFormRules: {
        attr_name: [{ required: true, message: '请输入内容', trigger: 'blur' }]
      },
      editFormRules: {
        attr_name: [{ required: true, message: '请输入内容', trigger: 'blur' }]
      }
    }
  },
  created() {
    this.getCateList()
  },
  computed: {
    isBtnDisable() {
      if (this.selectedCateKeys.length !== 3) return true
      return false
    },
    cateId() {
      if (this.selectedCateKeys.length === 3) return this.selectedCateKeys[2]
      return null
    },
    titleText() {
      if (this.activeName === 'many') return '动态参数'
      return '静态属性'
    }
  },
  methods: {
    showInput(attributes) {
      attributes.inputVisible = true
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus()
      })
    },
    async handleInputConfirm(attributes) {
      const inputValue = attributes.inputValue
      if (inputValue.trim()) {
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${attributes.attr_id}`,
          {
            attr_name: attributes.attr_name,
            attr_sel: this.activeName,
            attr_vals: attributes.attr_vals
              ? attributes.attr_vals + ',' + inputValue
              : inputValue
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('添加参数值失败')
        }
        this.$message.success('添加参数值成功')
        attributes.attr_vals = attributes.attr_vals
          ? attributes.attr_vals + ',' + inputValue
          : inputValue
      }
      attributes.inputVisible = false
      attributes.inputValue = ''
    },
    async handleClose(index, attributes) {
      let attrVals = attributes.attr_vals.split(',')
      attrVals.splice(index, 1)
      attrVals = attrVals.join(',')
      const { data: res } = await this.$http.put(
        `categories/${this.cateId}/attributes/${attributes.attr_id}`,
        {
          attr_name: attributes.attr_name,
          attr_sel: this.activeName,
          attr_vals: attrVals
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('删除属性失败')
      }
      this.$message.success('删除属性成功')
      attributes.attr_vals = attrVals
    },
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) return this.$message.error('获取失败')
      this.cateList = res.data
    },
    handleChange() {
      this.getParamsData()
    },
    async getParamsData() {
      if (this.selectedCateKeys.length !== 3) {
        this.selectedCateKeys = []
        this.manyTabData = []
        this.onlyTableData = []
        return false
      }
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName }
        }
      )
      if (res.meta.status !== 200) {
        this.$message.error('获取参数失败')
      }
      res.data.forEach(item => {
        item.inputVisible = false
        item.inputValue = ''
      })
      if (this.activeName === 'many') {
        this.manyTabData = res.data
      } else {
        this.onlyTableData = res.data
      }
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    showEdit(attributes) {
      this.editForm = { ...attributes }
      this.editDialogVisible = true
    },
    addParams() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return false
        }
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addForm.attr_name,
            attr_sel: this.activeName
          }
        )
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败')
        }
        this.$message.success('添加参数成功')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    editParams() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return false
        }
        const { data: res } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
          {
            attr_name: this.editForm.attr_name,
            attr_sel: this.activeName,
            attr_vals: this.editForm.attr_vals
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('修改参数失败')
        }
        this.editForm = { ...res.data, ...this.editForm }
        this.$message.success('修改参数成功')
        this.editDialogVisible = false
        this.getParamsData()
      })
    },
    async deleteAttr(attributes) {
      const confirmText = await this.$confirm(
        `此操作将删除${this.titleText}, 是否继续?`,
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmText !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attributes.attr_id}`
      )
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getParamsData()
    },
    handleTabClick() {
      this.getParamsData()
    }
  }
}
</script>

<style lang="less" scoped>
.cat_opt {
  margin: 15px 0;
}
.el-tag {
  margin: 5px;
}
.button-new-tag {
  margin-left: 10px;
  height: 32px;
  line-height: 30px;
  padding-top: 0;
  padding-bottom: 0;
}
.input-new-tag {
  width: 90px;
  margin-left: 10px;
  vertical-align: bottom;
}
</style>
